Fox, who runs a day trading blog called "Fox On Stocks," said that she earns over 64 percent per year on her investments.

This morning CNBC featured her on "Squawk On The Street" to talk about some of her favorite stock picks.

For day trading, she told CNBC that her favorite stocks are Tiffany's and Facebook. She said she had a great short sell on Tiffany's recently and that she likes Facebook because it's "relatively cheap" and has incredible volatility.